package com.ding.config;

import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

/**
 * LoginHandleInterceptor
 *
 * @author DYS
 * @date 2021/7/21
 * @time 10:17
 * @Description
 */
public class LoginHandleInterceptor implements HandlerInterceptor {
	@Override
	public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
		//进行登录拦截
		HttpSession session = request.getSession();
		String username = (String) session.getAttribute("username");
		if (username == null) {//没有登录
			request.setAttribute("msg","没有权限，请先登录");
			//放行
			request.getRequestDispatcher("/index.html").forward(request, response);
			return false;
		} else {
			return true;
		}
	}
}
